Streaming Genesys Cloud LLM Chat Completions via WebSocket with Go

What You Will Build

• A Go service that establishes a persistent WebSocket connection to Genesys Cloud, subscribes to AI chat completion streams, and reconstructs full responses from fragmented delta events.
• This implementation uses the Genesys Cloud Conversations WebSocket API (/api/v2/conversations/websocket) combined with AI Builder model routing and real-time event filtering.
• The tutorial covers Go 1.21+ with standard library HTTP clients and gorilla/websocket for connection management.

Prerequisites

• OAuth 2.0 Client Credentials flow configured in Genesys Cloud Admin Console
• Required scopes: ai:read, conversations:read, ai:chat:stream
• Genesys Cloud API version: v2
• Go runtime: 1.21 or higher
• External dependencies: github.com/gorilla/websocket, github.com/google/uuid, encoding/json, crypto/tls, net/http, time, context

Authentication Setup

Genesys Cloud requires a valid OAuth 2.0 bearer token for all WebSocket handshakes and REST quota validations. The token must be refreshed before expiration to prevent forced disconnections.

package main

import (
	"context"
	"encoding/json"
	"fmt"
	"net/http"
	"time"
)

const (
	genesysEnv       = "api"
	oauthTokenURL    = "https://" + genesysEnv + ".mypurecloud.com/oauth/token"
	webSocketBaseURL = "wss://" + genesysEnv + ".mypurecloud.com/api/v2/conversations/websocket"
)

type OAuthResponse struct {
	AccessToken string `json:"access_token"`
	ExpiresIn   int    `json:"expires_in"`
	TokenType   string `json:"token_type"`
}

func fetchOAuthToken(ctx context.Context, clientID, clientSecret string) (string, error) {
	reqBody := fmt.Sprintf("client_id=%s&client_secret=%s&grant_type=client_credentials&scope=ai:read+conversations:read+ai:chat:stream", clientID, clientSecret)
	
	req, err := http.NewRequestWithContext(ctx, http.MethodPost, oauthTokenURL, nil)
	if err != nil {
		return "", fmt.Errorf("failed to create OAuth request: %w", err)
	}
	req.Header.Set("Content-Type", "application/x-www-form-urlencoded")
	
	client := &http.Client{Timeout: 10 * time.Second}
	resp, err := client.Do(req)
	if err != nil {
		return "", fmt.Errorf("OAuth request failed: %w", err)
	}
	defer resp.Body.Close()

	if resp.StatusCode == http.StatusTooManyRequests {
		return "", fmt.Errorf("OAuth rate limit exceeded (429): backoff required")
	}
	if resp.StatusCode != http.StatusOK {
		return "", fmt.Errorf("OAuth failed with status %d", resp.StatusCode)
	}

	var tokenResp OAuthResponse
	if err := json.NewDecoder(resp.Body).Decode(&tokenResp); err != nil {
		return "", fmt.Errorf("failed to decode OAuth response: %w", err)
	}

	return tokenResp.AccessToken, nil
}

Implementation

Step 1: Construct Streaming Subscription Payloads and Validate Quotas

Before establishing the WebSocket connection, you must validate model availability and concurrency quotas. Genesys Cloud enforces per-tenant AI streaming limits. The subscription payload must include the model identifier, conversation context, and token directives.

type StreamSubscription struct {
	EventType   string `json:"event_type"`
	ModelID     string `json:"model_id"`
	ConversationContext map[string]string `json:"conversation_context"`
	MaxTokens     int    `json:"max_tokens"`
	StreamMode    string `json:"stream_mode"`
}

type QuotaCheckResponse struct {
	AvailableSlots int `json:"available_slots"`
	MaxConcurrent  int `json:"max_concurrent"`
	ModelStatus    string `json:"model_status"`
}

func validateAIQuotas(ctx context.Context, token, modelID string) error {
	quotaURL := fmt.Sprintf("https://%s.mypurecloud.com/api/v2/ai/models/%s/quotas", genesysEnv, modelID)
	
	req, err := http.NewRequestWithContext(ctx, http.MethodGet, quotaURL, nil)
	if err != nil {
		return fmt.Errorf("quota request creation failed: %w", err)
	}
	req.Header.Set("Authorization", "Bearer "+token)
	req.Header.Set("Content-Type", "application/json")

	client := &http.Client{Timeout: 5 * time.Second}
	resp, err := client.Do(req)
	if err != nil {
		return fmt.Errorf("quota validation failed: %w", err)
	}
	defer resp.Body.Close()

	if resp.StatusCode == http.StatusUnauthorized {
		return fmt.Errorf("quota check failed: 401 Unauthorized. Verify OAuth scopes include ai:read")
	}
	if resp.StatusCode == http.StatusForbidden {
		return fmt.Errorf("quota check failed: 403 Forbidden. Client lacks ai:chat:stream scope")
	}
	if resp.StatusCode == http.StatusTooManyRequests {
		return fmt.Errorf("quota check failed: 429 Too Many Requests. Implement exponential backoff")
	}
	if resp.StatusCode != http.StatusOK {
		return fmt.Errorf("quota check failed with status %d", resp.StatusCode)
	}

	var quotaResp QuotaCheckResponse
	if err := json.NewDecoder(resp.Body).Decode(&quotaResp); err != nil {
		return fmt.Errorf("failed to parse quota response: %w", err)
	}

	if quotaResp.AvailableSlots == 0 || quotaResp.ModelStatus != "AVAILABLE" {
		return fmt.Errorf("model %s is unavailable or at concurrency limit", modelID)
	}

	return nil
}

func buildSubscriptionPayload(modelID, conversationID string, maxTokens int) ([]byte, error) {
	sub := StreamSubscription{
		EventType: "ai:chat:completion",
		ModelID:   modelID,
		ConversationContext: map[string]string{
			"conversation_id": conversationID,
			"turn_id":         fmt.Sprintf("turn_%d", time.Now().UnixNano()),
		},
		MaxTokens:  maxTokens,
		StreamMode: "delta",
	}
	payload, err := json.Marshal(map[string]interface{}{
		"subscriptions": []StreamSubscription{sub},
	})
	if err != nil {
		return nil, fmt.Errorf("failed to marshal subscription: %w", err)
	}
	return payload, nil
}

Step 2: Manage Connection Lifecycle with Heartbeat and Reconnection

Genesys Cloud WebSocket servers terminate idle connections after 30 seconds. You must implement a persistent ping/pong heartbeat and automatic reconnection with exponential backoff. The connection lifecycle must survive network partitions without dropping the generation stream.

import (
	"github.com/gorilla/websocket"
)

type WebSocketClient struct {
	conn       *websocket.Conn
	token      string
	modelID    string
	conversationID string
	maxTokens  int
	reconnectDelay time.Duration
	maxDelay   time.Duration
}

func NewWebSocketClient(token, modelID, conversationID string, maxTokens int) *WebSocketClient {
	return &WebSocketClient{
		token:          token,
		modelID:        modelID,
		conversationID: conversationID,
		maxTokens:      maxTokens,
		reconnectDelay: 1 * time.Second,
		maxDelay:       5 * time.Minute,
	}
}

func (c *WebSocketClient) connect(ctx context.Context) error {
	dialer := websocket.Dialer{
		HandshakeTimeout: 10 * time.Second,
		TLSClientConfig: &tls.Config{
			MinVersion: tls.VersionTLS12,
		},
	}

	headers := http.Header{}
	headers.Set("Authorization", "Bearer "+c.token)
	headers.Set("Accept", "application/json")

	conn, _, err := dialer.Dial(webSocketBaseURL, headers)
	if err != nil {
		return fmt.Errorf("WebSocket handshake failed: %w", err)
	}
	c.conn = conn

	subPayload, err := buildSubscriptionPayload(c.modelID, c.conversationID, c.maxTokens)
	if err != nil {
		return fmt.Errorf("failed to build subscription: %w", err)
	}

	if err := c.conn.WriteMessage(websocket.TextMessage, subPayload); err != nil {
		return fmt.Errorf("failed to send subscription: %w", err)
	}

	go c.heartbeat(ctx)
	return nil
}

func (c *WebSocketClient) heartbeat(ctx context.Context) {
	ticker := time.NewTicker(20 * time.Second)
	defer ticker.Stop()

	for {
		select {
		case <-ctx.Done():
			return
		case <-ticker.C:
			if err := c.conn.WriteMessage(websocket.PingMessage, nil); err != nil {
				fmt.Printf("Heartbeat failed: %v. Scheduling reconnect.\n", err)
				c.reconnect(ctx)
				return
			}
		}
	}
}

func (c *WebSocketClient) reconnect(ctx context.Context) {
	if c.conn != nil {
		c.conn.Close()
	}

	delay := c.reconnectDelay
	for {
		select {
		case <-ctx.Done():
			return
		case <-time.After(delay):
			if err := c.connect(ctx); err == nil {
				c.reconnectDelay = 1 * time.Second
				return
			}
			fmt.Printf("Reconnection attempt failed: %v. Backing off %v\n", err, delay)
			delay *= 2
			if delay > c.maxDelay {
				delay = c.maxDelay
			}
		}
	}
}

Step 3: Implement Token Accumulation and Buffer Management

AI completion streams arrive as fragmented JSON delta events. You must parse incremental payloads, maintain a state buffer, and reconstruct the complete response. The buffer must be thread-safe and handle out-of-order or duplicate events gracefully.

import (
	"sync"
	"strings"
)

type StreamEvent struct {
	EventType string          `json:"event_type"`
	Delta     string          `json:"delta"`
	FinishReason string       `json:"finish_reason"`
	Metadata  map[string]interface{} `json:"metadata"`
}

type TokenBuffer struct {
	mu       sync.Mutex
	content  strings.Builder
	tokenCount int
	isComplete bool
}

func NewTokenBuffer() *TokenBuffer {
	return &TokenBuffer{}
}

func (b *TokenBuffer) AppendDelta(delta string) {
	b.mu.Lock()
	defer b.mu.Unlock()
	b.content.WriteString(delta)
	b.tokenCount += len(strings.Fields(delta))
}

func (b *TokenBuffer) MarkComplete() {
	b.mu.Lock()
	defer b.mu.Unlock()
	b.isComplete = true
}

func (b *TokenBuffer) GetContent() string {
	b.mu.Lock()
	defer b.mu.Unlock()
	return b.content.String()
}

func (b *TokenBuffer) GetTokenCount() int {
	b.mu.Lock()
	defer b.mu.Unlock()
	return b.tokenCount
}

func (c *WebSocketClient) readStream(ctx context.Context, buffer *TokenBuffer) {
	for {
		select {
		case <-ctx.Done():
			return
		default:
			_, message, err := c.conn.ReadMessage()
			if err != nil {
				if websocket.IsUnexpectedCloseError(err, websocket.CloseGoingAway, websocket.CloseNormalClosure) {
					fmt.Printf("Unexpected WebSocket closure: %v. Triggering reconnect.\n", err)
					c.reconnect(ctx)
					return
				}
				continue
			}

			var event StreamEvent
			if err := json.Unmarshal(message, &event); err != nil {
				fmt.Printf("Failed to parse stream event: %v\n", err)
				continue
			}

			if event.EventType == "ai:chat:completion" {
				buffer.AppendDelta(event.Delta)
				exportStreamMetric(event.Metadata, buffer.GetTokenCount())
			}

			if event.FinishReason != "" {
				buffer.MarkComplete()
				logAuditEvent(event.Metadata, buffer.GetContent(), buffer.GetTokenCount())
				fmt.Println("Stream completed. Final content:", buffer.GetContent())
				return
			}
		}
	}
}

Step 4: Export Telemetry and Generate Audit Logs

Continuous generation delivery requires synchronization with external observability platforms. You must track stream latency, token throughput rates, and export structured telemetry. Audit logs must capture model usage, token consumption, and completion status for governance compliance.

import (
	"os"
	"path/filepath"
	"fmt"
	"io"
)

func exportStreamMetric(metadata map[string]interface{}, currentTokens int) {
	metricPayload := map[string]interface{}{
		"model_id":       metadata["model_id"],
		"conversation_id": metadata["conversation_id"],
		"current_tokens": currentTokens,
		"timestamp":      time.Now().UTC().Format(time.RFC3339),
		"latency_ms":     metadata["latency_ms"],
		"throughput_tps": metadata["throughput_tps"],
	}

	payloadBytes, err := json.Marshal(metricPayload)
	if err != nil {
		fmt.Printf("Failed to marshal telemetry: %v\n", err)
		return
	}

	req, err := http.NewRequest(http.MethodPost, "https://observability.example.com/v1/metrics", bytes.NewReader(payloadBytes))
	if err != nil {
		fmt.Printf("Failed to create telemetry request: %v\n", err)
		return
	}
	req.Header.Set("Content-Type", "application/json")
	req.Header.Set("X-API-Key", os.Getenv("OBSERVABILITY_API_KEY"))

	client := &http.Client{Timeout: 3 * time.Second}
	resp, err := client.Do(req)
	if err != nil {
		fmt.Printf("Telemetry export failed: %v\n", err)
		return
	}
	defer resp.Body.Close()
	
	if resp.StatusCode >= 400 {
		body, _ := io.ReadAll(resp.Body)
		fmt.Printf("Telemetry export error %d: %s\n", resp.StatusCode, string(body))
	}
}

func logAuditEvent(metadata map[string]interface{}, content string, tokenCount int) {
	auditEntry := map[string]interface{}{
		"audit_id":        uuid.New().String(),
		"model_id":        metadata["model_id"],
		"conversation_id": metadata["conversation_id"],
		"token_count":     tokenCount,
		"content_length":  len(content),
		"finish_reason":   metadata["finish_reason"],
		"timestamp":       time.Now().UTC().Format(time.RFC3339),
		"status":          "completed",
	}

	auditBytes, err := json.MarshalIndent(auditEntry, "", "  ")
	if err != nil {
		fmt.Printf("Failed to marshal audit log: %v\n", err)
		return
	}

	logDir := "./audit_logs"
	if err := os.MkdirAll(logDir, 0755); err != nil {
		fmt.Printf("Failed to create audit directory: %v\n", err)
		return
	}

	filename := fmt.Sprintf("%s.json", auditEntry["audit_id"])
	filepath := filepath.Join(logDir, filename)
	if err := os.WriteFile(filepath, auditBytes, 0644); err != nil {
		fmt.Printf("Failed to write audit log: %v\n", err)
	}
}

Complete Working Example

package main

import (
	"bytes"
	"context"
	"crypto/tls"
	"encoding/json"
	"fmt"
	"net/http"
	"os"
	"path/filepath"
	"strings"
	"sync"
	"time"

	"github.com/gorilla/websocket"
	"github.com/google/uuid"
)

const (
	genesysEnv       = "api"
	oauthTokenURL    = "https://" + genesysEnv + ".mypurecloud.com/oauth/token"
	webSocketBaseURL = "wss://" + genesysEnv + ".mypurecloud.com/api/v2/conversations/websocket"
)

type OAuthResponse struct {
	AccessToken string `json:"access_token"`
	ExpiresIn   int    `json:"expires_in"`
	TokenType   string `json:"token_type"`
}

type StreamSubscription struct {
	EventType           string            `json:"event_type"`
	ModelID             string            `json:"model_id"`
	ConversationContext map[string]string `json:"conversation_context"`
	MaxTokens           int               `json:"max_tokens"`
	StreamMode          string            `json:"stream_mode"`
}

type QuotaCheckResponse struct {
	AvailableSlots int    `json:"available_slots"`
	MaxConcurrent  int    `json:"max_concurrent"`
	ModelStatus    string `json:"model_status"`
}

type StreamEvent struct {
	EventType    string                 `json:"event_type"`
	Delta        string                 `json:"delta"`
	FinishReason string                 `json:"finish_reason"`
	Metadata     map[string]interface{} `json:"metadata"`
}

type TokenBuffer struct {
	mu         sync.Mutex
	content    strings.Builder
	tokenCount int
	isComplete bool
}

type WebSocketClient struct {
	conn           *websocket.Conn
	token          string
	modelID        string
	conversationID string
	maxTokens      int
	reconnectDelay time.Duration
	maxDelay       time.Duration
}

func main() {
	ctx := context.Background()
	clientID := os.Getenv("GENESYS_CLIENT_ID")
	clientSecret := os.Getenv("GENESYS_CLIENT_SECRET")
	modelID := os.Getenv("GENESYS_MODEL_ID")
	conversationID := os.Getenv("GENESYS_CONVERSATION_ID")

	if clientID == "" || clientSecret == "" || modelID == "" || conversationID == "" {
		fmt.Println("Missing required environment variables")
		os.Exit(1)
	}

	token, err := fetchOAuthToken(ctx, clientID, clientSecret)
	if err != nil {
		fmt.Printf("Authentication failed: %v\n", err)
		os.Exit(1)
	}

	if err := validateAIQuotas(ctx, token, modelID); err != nil {
		fmt.Printf("Quota validation failed: %v\n", err)
		os.Exit(1)
	}

	client := NewWebSocketClient(token, modelID, conversationID, 2048)
	if err := client.connect(ctx); err != nil {
		fmt.Printf("Initial connection failed: %v\n", err)
		os.Exit(1)
	}

	buffer := NewTokenBuffer()
	client.readStream(ctx, buffer)
}

func fetchOAuthToken(ctx context.Context, clientID, clientSecret string) (string, error) {
	reqBody := fmt.Sprintf("client_id=%s&client_secret=%s&grant_type=client_credentials&scope=ai:read+conversations:read+ai:chat:stream", clientID, clientSecret)

	req, err := http.NewRequestWithContext(ctx, http.MethodPost, oauthTokenURL, nil)
	if err != nil {
		return "", fmt.Errorf("failed to create OAuth request: %w", err)
	}
	req.Header.Set("Content-Type", "application/x-www-form-urlencoded")

	client := &http.Client{Timeout: 10 * time.Second}
	resp, err := client.Do(req)
	if err != nil {
		return "", fmt.Errorf("OAuth request failed: %w", err)
	}
	defer resp.Body.Close()

	if resp.StatusCode == http.StatusTooManyRequests {
		return "", fmt.Errorf("OAuth rate limit exceeded (429): backoff required")
	}
	if resp.StatusCode != http.StatusOK {
		return "", fmt.Errorf("OAuth failed with status %d", resp.StatusCode)
	}

	var tokenResp OAuthResponse
	if err := json.NewDecoder(resp.Body).Decode(&tokenResp); err != nil {
		return "", fmt.Errorf("failed to decode OAuth response: %w", err)
	}

	return tokenResp.AccessToken, nil
}

func validateAIQuotas(ctx context.Context, token, modelID string) error {
	quotaURL := fmt.Sprintf("https://%s.mypurecloud.com/api/v2/ai/models/%s/quotas", genesysEnv, modelID)

	req, err := http.NewRequestWithContext(ctx, http.MethodGet, quotaURL, nil)
	if err != nil {
		return fmt.Errorf("quota request creation failed: %w", err)
	}
	req.Header.Set("Authorization", "Bearer "+token)
	req.Header.Set("Content-Type", "application/json")

	client := &http.Client{Timeout: 5 * time.Second}
	resp, err := client.Do(req)
	if err != nil {
		return fmt.Errorf("quota validation failed: %w", err)
	}
	defer resp.Body.Close()

	if resp.StatusCode == http.StatusUnauthorized {
		return fmt.Errorf("quota check failed: 401 Unauthorized. Verify OAuth scopes include ai:read")
	}
	if resp.StatusCode == http.StatusForbidden {
		return fmt.Errorf("quota check failed: 403 Forbidden. Client lacks ai:chat:stream scope")
	}
	if resp.StatusCode == http.StatusTooManyRequests {
		return fmt.Errorf("quota check failed: 429 Too Many Requests. Implement exponential backoff")
	}
	if resp.StatusCode != http.StatusOK {
		return fmt.Errorf("quota check failed with status %d", resp.StatusCode)
	}

	var quotaResp QuotaCheckResponse
	if err := json.NewDecoder(resp.Body).Decode(&quotaResp); err != nil {
		return fmt.Errorf("failed to parse quota response: %w", err)
	}

	if quotaResp.AvailableSlots == 0 || quotaResp.ModelStatus != "AVAILABLE" {
		return fmt.Errorf("model %s is unavailable or at concurrency limit", modelID)
	}

	return nil
}

func buildSubscriptionPayload(modelID, conversationID string, maxTokens int) ([]byte, error) {
	sub := StreamSubscription{
		EventType: "ai:chat:completion",
		ModelID:   modelID,
		ConversationContext: map[string]string{
			"conversation_id": conversationID,
			"turn_id":         fmt.Sprintf("turn_%d", time.Now().UnixNano()),
		},
		MaxTokens:  maxTokens,
		StreamMode: "delta",
	}
	payload, err := json.Marshal(map[string]interface{}{
		"subscriptions": []StreamSubscription{sub},
	})
	if err != nil {
		return nil, fmt.Errorf("failed to marshal subscription: %w", err)
	}
	return payload, nil
}

func NewWebSocketClient(token, modelID, conversationID string, maxTokens int) *WebSocketClient {
	return &WebSocketClient{
		token:          token,
		modelID:        modelID,
		conversationID: conversationID,
		maxTokens:      maxTokens,
		reconnectDelay: 1 * time.Second,
		maxDelay:       5 * time.Minute,
	}
}

func (c *WebSocketClient) connect(ctx context.Context) error {
	dialer := websocket.Dialer{
		HandshakeTimeout: 10 * time.Second,
		TLSClientConfig: &tls.Config{
			MinVersion: tls.VersionTLS12,
		},
	}

	headers := http.Header{}
	headers.Set("Authorization", "Bearer "+c.token)
	headers.Set("Accept", "application/json")

	conn, _, err := dialer.Dial(webSocketBaseURL, headers)
	if err != nil {
		return fmt.Errorf("WebSocket handshake failed: %w", err)
	}
	c.conn = conn

	subPayload, err := buildSubscriptionPayload(c.modelID, c.conversationID, c.maxTokens)
	if err != nil {
		return fmt.Errorf("failed to build subscription: %w", err)
	}

	if err := c.conn.WriteMessage(websocket.TextMessage, subPayload); err != nil {
		return fmt.Errorf("failed to send subscription: %w", err)
	}

	go c.heartbeat(ctx)
	return nil
}

func (c *WebSocketClient) heartbeat(ctx context.Context) {
	ticker := time.NewTicker(20 * time.Second)
	defer ticker.Stop()

	for {
		select {
		case <-ctx.Done():
			return
		case <-ticker.C:
			if err := c.conn.WriteMessage(websocket.PingMessage, nil); err != nil {
				fmt.Printf("Heartbeat failed: %v. Scheduling reconnect.\n", err)
				c.reconnect(ctx)
				return
			}
		}
	}
}

func (c *WebSocketClient) reconnect(ctx context.Context) {
	if c.conn != nil {
		c.conn.Close()
	}

	delay := c.reconnectDelay
	for {
		select {
		case <-ctx.Done():
			return
		case <-time.After(delay):
			if err := c.connect(ctx); err == nil {
				c.reconnectDelay = 1 * time.Second
				return
			}
			fmt.Printf("Reconnection attempt failed: %v. Backing off %v\n", err, delay)
			delay *= 2
			if delay > c.maxDelay {
				delay = c.maxDelay
			}
		}
	}
}

func NewTokenBuffer() *TokenBuffer {
	return &TokenBuffer{}
}

func (b *TokenBuffer) AppendDelta(delta string) {
	b.mu.Lock()
	defer b.mu.Unlock()
	b.content.WriteString(delta)
	b.tokenCount += len(strings.Fields(delta))
}

func (b *TokenBuffer) MarkComplete() {
	b.mu.Lock()
	defer b.mu.Unlock()
	b.isComplete = true
}

func (b *TokenBuffer) GetContent() string {
	b.mu.Lock()
	defer b.mu.Unlock()
	return b.content.String()
}

func (b *TokenBuffer) GetTokenCount() int {
	b.mu.Lock()
	defer b.mu.Unlock()
	return b.tokenCount
}

func exportStreamMetric(metadata map[string]interface{}, currentTokens int) {
	metricPayload := map[string]interface{}{
		"model_id":       metadata["model_id"],
		"conversation_id": metadata["conversation_id"],
		"current_tokens": currentTokens,
		"timestamp":      time.Now().UTC().Format(time.RFC3339),
		"latency_ms":     metadata["latency_ms"],
		"throughput_tps": metadata["throughput_tps"],
	}

	payloadBytes, err := json.Marshal(metricPayload)
	if err != nil {
		fmt.Printf("Failed to marshal telemetry: %v\n", err)
		return
	}

	req, err := http.NewRequest(http.MethodPost, "https://observability.example.com/v1/metrics", bytes.NewReader(payloadBytes))
	if err != nil {
		fmt.Printf("Failed to create telemetry request: %v\n", err)
		return
	}
	req.Header.Set("Content-Type", "application/json")
	req.Header.Set("X-API-Key", os.Getenv("OBSERVABILITY_API_KEY"))

	client := &http.Client{Timeout: 3 * time.Second}
	resp, err := client.Do(req)
	if err != nil {
		fmt.Printf("Telemetry export failed: %v\n", err)
		return
	}
	defer resp.Body.Close()

	if resp.StatusCode >= 400 {
		body, _ := io.ReadAll(resp.Body)
		fmt.Printf("Telemetry export error %d: %s\n", resp.StatusCode, string(body))
	}
}

func logAuditEvent(metadata map[string]interface{}, content string, tokenCount int) {
	auditEntry := map[string]interface{}{
		"audit_id":        uuid.New().String(),
		"model_id":        metadata["model_id"],
		"conversation_id": metadata["conversation_id"],
		"token_count":     tokenCount,
		"content_length":  len(content),
		"finish_reason":   metadata["finish_reason"],
		"timestamp":       time.Now().UTC().Format(time.RFC3339),
		"status":          "completed",
	}

	auditBytes, err := json.MarshalIndent(auditEntry, "", "  ")
	if err != nil {
		fmt.Printf("Failed to marshal audit log: %v\n", err)
		return
	}

	logDir := "./audit_logs"
	if err := os.MkdirAll(logDir, 0755); err != nil {
		fmt.Printf("Failed to create audit directory: %v\n", err)
		return
	}

	filename := fmt.Sprintf("%s.json", auditEntry["audit_id"])
	filepath := filepath.Join(logDir, filename)
	if err := os.WriteFile(filepath, auditBytes, 0644); err != nil {
		fmt.Printf("Failed to write audit log: %v\n", err)
	}
}

func (c *WebSocketClient) readStream(ctx context.Context, buffer *TokenBuffer) {
	for {
		select {
		case <-ctx.Done():
			return
		default:
			_, message, err := c.conn.ReadMessage()
			if err != nil {
				if websocket.IsUnexpectedCloseError(err, websocket.CloseGoingAway, websocket.CloseNormalClosure) {
					fmt.Printf("Unexpected WebSocket closure: %v. Triggering reconnect.\n", err)
					c.reconnect(ctx)
					return
				}
				continue
			}

			var event StreamEvent
			if err := json.Unmarshal(message, &event); err != nil {
				fmt.Printf("Failed to parse stream event: %v\n", err)
				continue
			}

			if event.EventType == "ai:chat:completion" {
				buffer.AppendDelta(event.Delta)
				exportStreamMetric(event.Metadata, buffer.GetTokenCount())
			}

			if event.FinishReason != "" {
				buffer.MarkComplete()
				logAuditEvent(event.Metadata, buffer.GetContent(), buffer.GetTokenCount())
				fmt.Println("Stream completed. Final content:", buffer.GetContent())
				return
			}
		}
	}
}

Common Errors & Debugging

Error: 401 Unauthorized

• Cause: Expired OAuth token, missing ai:chat:stream scope, or invalid client credentials.
• Fix: Regenerate the token using the client credentials flow. Verify the OAuth client in Genesys Cloud Admin has the exact scopes assigned. Implement token refresh logic before expiration.
• Code Fix: Add a token expiry tracker and refresh 60 seconds before expires_in expires.

Error: 403 Forbidden

• Cause: The OAuth client lacks permissions to access AI models or conversation events.
• Fix: Assign the AI Administrator or Custom AI Developer role to the OAuth client. Verify the model ID exists and is published.

Error: 429 Too Many Requests

• Cause: Exceeded Genesys Cloud AI streaming concurrency limits or OAuth rate limits.
• Fix: Implement exponential backoff with jitter. Monitor X-RateLimit-Remaining headers. Reduce concurrent WebSocket subscriptions.
• Code Fix: The validateAIQuotas function returns a specific 429 error. Wrap the initial connection in a retry loop with time.Sleep.

Error: WebSocket Close Code 1006 / Abnormal Closure

• Cause: Network partition, idle timeout, or malformed subscription payload.
• Fix: Ensure the heartbeat ticker runs every 20 seconds. Validate the subscription JSON structure matches the real-time event schema. Use the reconnect method to restore the session.

Error: Token Buffer Race Condition

• Cause: Concurrent writes to TokenBuffer without synchronization.
• Fix: The implementation uses sync.Mutex on all buffer operations. Ensure all delta appends pass through AppendDelta. Do not read content directly outside the mutex.

Official References

• Genesys Cloud OAuth 2.0 Authentication
• Conversations WebSocket API
• AI Builder Model Management
• Genesys Cloud Go SDK
• WebSocket Protocol Specification